A substation withstand test device

Abstract

This utility model discloses a substation withstand voltage test device, belonging to the technical field of test device technology. It includes a frequency converter, an excitation transformer, a high-voltage reactor, and a capacitive voltage divider, as well as multiple support bases. A traveling mechanism is located at the bottom of the support bases, enabling the support bases to be moved and transported. A splicing assembly is located between adjacent support bases, allowing adjacent support bases to be joined and positioned. This utility model uses support bases to support the frequency converter, excitation transformer, high-voltage reactor, and capacitive voltage divider respectively. Combined with the traveling mechanism at the bottom of the support bases and the splicing assembly between adjacent support bases, the various components of the withstand voltage test device can be moved, transported, and assembled independently, facilitating position adjustment and splicing positioning of each component, thereby improving ease of use.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a substation withstand voltage testing device. Background Technology

[0002] The variable frequency series resonant test set utilizes the principle of series resonance. It uses an excitation transformer to excite the series resonant circuit. By adjusting the output frequency of the variable frequency controller, the inductance of the reactor and the capacitance of the test object in the circuit resonate in series. The resonant voltage is the voltage applied to the test object. It is widely used in AC withstand voltage tests of all main electrical equipment such as substations and lines.

[0003] In existing technologies, withstand voltage testing devices mainly consist of a frequency converter, an excitation transformer, a high-voltage reactor, and a capacitive voltage divider, with compensation capacitors selected according to requirements. Currently, to meet the withstand voltage testing needs of different main electrical equipment, the number and placement of each component in the withstand voltage testing device vary. Furthermore, in current withstand voltage testing devices, these components are stored or used independently, increasing the tediousness of manual organization and classification, and affecting ease of use. Therefore, we propose a substation withstand voltage testing device. Utility Model Content

[0004] The purpose of this invention is to provide a substation withstand voltage test device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a substation withstand voltage test device, comprising a frequency converter, an excitation transformer, a high-voltage reactor, and a capacitor divider, and further comprising: Multiple support bases are provided, which are used for supporting and positioning the frequency converter, excitation transformer, high-voltage reactor and capacitor divider, respectively. A walking mechanism is provided at the bottom of the support base, enabling the support base to be moved and transported via the walking mechanism. A splicing assembly is disposed between two adjacent support bases, so that the two adjacent support bases are spliced ​​and positioned by the splicing assembly.

[0006] Preferably, the walking mechanism is a caster wheel, and a caster wheel is fixedly installed at the corner of the bottom of each support base, and the caster wheel is equipped with a wheel brake.

[0007] Preferably, the splicing component includes: A mating protrusion is fixedly mounted on one side of the support base; A docking groove is formed on the other side of the support base and corresponds to the position of the docking protrusion.

[0008] Preferably, the splicing component further includes: A socket is provided on the inner wall of the bottom of the mating groove; A locking rod is movably inserted into the bottom end of the mating protrusion and extends into the interior of the mating protrusion. The bottom of the locking rod is movably inserted into the corresponding insertion hole.

[0009] Preferably, the splicing component further includes: The connecting plate has a hollow cavity inside the docking protrusion and is movably disposed within the cavity of the docking protrusion and fixed to the top of the locking rod. A reset spring is fixedly disposed between the connecting plate and the top of the inner cavity of the mating protrusion.

[0010] Preferably, a vertical cavity is provided inside the support base on the side near the docking protrusion. The inner cavity of the docking protrusion is connected to the vertical cavity. An unlocking rod is movably inserted into the vertical cavity. The top of the unlocking rod extends to the top of the support base, and the outer peripheral wall of the unlocking rod is fixedly connected to one end of the connecting plate.

[0011] The technical effects and advantages of this utility model are as follows: This invention employs a support base to support the frequency converter, excitation transformer, high-voltage reactor, and capacitor divider, respectively. Then, in conjunction with the walking mechanism at the bottom of the support base and the splicing assembly between two adjacent support bases, the various components of the withstand voltage test device can be moved, transported, and spliced ​​for use independently. This facilitates the position adjustment and splicing positioning of each component, thereby improving the ease of use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a three-dimensional structural diagram of the support base of this utility model.

[0014] Figure 3 This is a partial cross-sectional view of the front of the support base of this utility model.

[0015] In the diagram: 100, Support base; 101, Variable frequency power supply; 102, Excitation transformer; 103, High-voltage reactor; 104, Capacitor voltage divider; 105, Caster wheel; 106, Connecting protrusion; 107, Connecting groove; 108, Insertion hole; 109, Locking rod; 110, Return spring; 111, Connecting plate; 112, Vertical cavity; 113, Unlocking lever. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides, for example Figures 1-3 The substation withstand voltage test device shown includes a frequency converter 101, an excitation transformer 102, a high-voltage reactor 103, and a capacitor voltage divider 104. The capacitor of the test specimen and the high-voltage reactor 103 form a series resonant connection. The capacitor voltage divider 104 is connected in parallel with the test specimen to measure the resonant voltage of the test specimen and to provide overvoltage protection signals. The frequency modulation power output is coupled to the series resonant circuit through the excitation transformer 102 to provide the excitation power for the series resonance. The high-voltage reactor 103 is designed with multiple separate units, which can meet the requirements of high-voltage, low-current equipment testing as well as low-voltage AC withstand voltage testing, thus having a wide range of applications. The withstand voltage test device also includes multiple support bases 100, which are used to support and position the frequency converter 101, excitation transformer 102, high-voltage reactor 103, and capacitor voltage divider 104 respectively. A traveling mechanism is set at the bottom of the support base 100, allowing the support base 100 to be moved and transported. The components are positioned between two adjacent support bases 100, allowing them to be joined and positioned using splicing components. The frequency converter 101, excitation transformer 102, high-voltage reactor 103, and capacitor divider 104 are supported by appropriately sized support bases 100. The walking mechanism at the bottom of each support base 100 facilitates easy movement and transport, making it convenient for users to adjust their positions and for handling and storage. Furthermore, the splicing components allow for the connection and fixation of adjacent support bases 100, enabling the withstand voltage testing device to be spliced ​​together during overall transport, facilitating centralized transport and positioning. This allows users to select and use the device according to their testing needs. The splicing components also allow for positional adjustments of the frequency converter 101, excitation transformer 102, high-voltage reactor 103, or capacitor divider 104 on each support base 100, making it easier and faster for users to adjust the positions of the various components in the withstand voltage testing device, thus improving the ease of use of the device.

[0018] The traveling mechanism is a caster wheel 105. A caster wheel 105 is fixedly installed at the bottom corner of each support base 100, and the caster wheel 105 is equipped with a wheel brake. The caster wheel 105 is used as a traveling mechanism. With the wheel brake, it can meet the movement and positioning of a single support base 100. This makes it convenient for users to adjust and position the various components in the pressure resistance test device. It is convenient to adjust the position of each component according to the test requirements. At the same time, there is no need for manual handling, making the operation more labor-saving and convenient.

[0019] The splicing assembly includes a mating protrusion 106, a mating groove 107, an insertion hole 108, and a locking rod 109. The mating protrusion 106 is fixedly disposed on one side of the support base 100. The mating groove 107 is opened on the other side of the support base 100 and corresponds to the position of the mating protrusion 106. The insertion hole 108 is opened on the bottom inner wall of the mating groove 107. The locking rod 109 is movably inserted into the bottom end of the mating protrusion 106 and extends into the interior of the mating protrusion 106. The bottom of the locking rod 109 is movably inserted into the corresponding insertion hole 108. The interior of the mating protrusion 106 is hollow. A connecting plate 111 is movably disposed in the cavity of the mating protrusion 106 and fixed to the top end of the locking rod 109. A return spring 110 is fixed between the connecting plate 111 and the top of the inner cavity of the mating protrusion 106. In this embodiment, when splicing two adjacent support bases 100, the mating protrusion 106 and the corresponding groove 107 can be connected to the support base 100. The mating groove 107 on the adjacent support base 100 is used to position the two adjacent support bases 100, thereby ensuring accurate and convenient positioning when splicing the two adjacent support bases 100. At the same time, after the mating protrusion 106 is inserted into the mating groove 107, the locking rod 109 in 16 can be extended downward and inserted into the insertion hole 108 at the bottom of the mating groove 107 to limit and lock the position between the mating groove 107 and the mating protrusion 106, thereby completing the limiting and fixing of the splicing between the two adjacent support bases 100 and ensuring the stability of the splicing between the two adjacent support bases 100. The cooperation of the return spring 110 in the mating protrusion 106 and the connecting plate 111 allows the locking rod 109 to automatically extend outward, making the locking operation of the position after the mating protrusion 106 and the mating groove 107 of the two adjacent support bases 100 are inserted more convenient.

[0020] Furthermore, a vertical cavity 112 is provided inside the support base 100 on one side near the docking protrusion 106. The inner cavity of the docking protrusion 106 is connected to the vertical cavity 112. An unlocking lever 113 is movably inserted into the vertical cavity 112. The top of the unlocking lever 113 extends to the top of the support base 100, and the outer peripheral wall of the unlocking lever 113 is fixedly connected to one end of the connecting plate 111. By providing a vertical cavity 112 at the end of the support base 100 to allow for the movable insertion and installation of the unlocking lever 113, and cooperating with the inner cavity of the docking protrusion 106 to communicate with the vertical cavity 112, one end of the connecting plate 111 extends into the vertical cavity 112 and is fixed to the outer peripheral wall of the unlocking lever 113. Thus, by pulling up a single unlocking lever 113, multiple locking rods 109 can be simultaneously driven to retract into the docking protrusion 106, thereby achieving the unlocking of multiple locking rods 109, making the unlocking operation more convenient and effortless.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A substation withstand voltage test device, comprising a frequency converter (101), an excitation transformer (102), a high-voltage reactor (103), and a capacitive voltage divider (104), characterized in that, Also includes: Multiple support bases (100) are used for supporting and positioning the frequency converter (101), excitation transformer (102), high voltage reactor (103) and capacitor divider (104), respectively. The walking mechanism is located at the bottom of the support base (100), so that the support base (100) can be moved and transported by the walking mechanism; The splicing component is disposed between two adjacent support bases (100) so that the two adjacent support bases (100) are spliced ​​and positioned by the splicing component.

2. The substation withstand voltage test device according to claim 1, characterized in that, The walking mechanism is a universal wheel (105). A universal wheel (105) is fixedly installed at the corner of the bottom of each support base (100), and a wheel brake is installed on the universal wheel (105).

3. The substation withstand voltage test device according to claim 1, characterized in that, The splicing components include: A mating protrusion (106) is fixedly disposed on one side of the support base (100); A docking groove (107) is provided on the other side of the support base (100) and corresponds to the position of the docking protrusion (106).

4. The substation withstand voltage test device according to claim 3, characterized in that, The splicing component also includes: A socket (108) is provided on the inner wall of the bottom of the mating groove (107); Locking rod (109) is movably inserted into the bottom end of the mating protrusion (106) and extends into the interior of the mating protrusion (106). The bottom of the locking rod (109) is movably inserted into the corresponding insertion hole (108).

5. The substation withstand voltage test device according to claim 4, characterized in that, The splicing component also includes: The connecting plate (111) has a hollow cavity inside the docking protrusion (106). The connecting plate (111) is movably disposed in the cavity of the docking protrusion (106) and fixed to the top of the locking rod (109). A reset spring (110) is fixedly disposed between the connecting plate (111) and the top of the inner cavity of the mating protrusion (106).

6. The substation withstand voltage test device according to claim 5, characterized in that, A vertical cavity (112) is provided inside the support base (100) on the side near the docking protrusion (106). The inner cavity of the docking protrusion (106) is connected to the vertical cavity (112). An unlocking rod (113) is movably inserted into the vertical cavity (112). The top of the unlocking rod (113) extends to the top of the support base (100), and the outer peripheral wall of the unlocking rod (113) is fixedly connected to one end of the connecting plate (111).

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